Columnar mesophase from a new hybrid siloxane-triphenylene

R Zniber, R Achour, MZ Cherkaoui, B Donnio…

Index: Zniber, Rachid; Achour, Redouane; Cherkaoui, Mohammed Zoubair; Donnio, Bertrand; Gehringer, Lionel; Guillon, Daniel Journal of Materials Chemistry, 2002 , vol. 12, # 8 p. 2208 - 2213

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Citation Number: 33

Abstract

The design, the synthesis and the mesomorphic properties of a new disc-like mesogen based on a hexasubstituted triphenylene core terminated with pentamethyldisiloxane pendant groups are reported. The siloxane fragments were grafted to the six terminal olefinic branches of a triphenylene precursor by a Pt-catalysed hydrosilylation reaction. Both the hexaolefinic and the hexasiloxane derivatives are mesomorphic, showing a rectangular ...